Once again we have more information that comes from a retailer list. This time around it looks like Nintendo will be releasing different colors for Wiimotes and Nunchucks.
Silver Wiimote
Blue Wiimote
Pearl Pink Wiimote

Silver Nunchuck
Blue Nunchuck
Pearl Pink Nunchuck

According to the retailer list, these are due to ship on June 29th in Europe. While this is not an official confirmation from Nintendo, these retailers lists have been spot on.